Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A recreation of an Old West apothecary full of curios.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

This iconic science fiction house still looks like something from the future.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Even in death, he's still your huckleberry.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The clock that sets them all.

Colorado's only true geyser is hidden within the San Juan National Forest.

Community owned and operated, this property is home to a diverse set of nudists.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The largest source of fossilized insects anywhere.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

See six states, pickled freaks, rocks, and antiques.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

This super steep hike ascends 2,000 feet in less than a mile.

A little-known hot spring haven right below the highway.